refactor(browser): удалены неиспользуемые импорты из preview компонентов

- audio-preview: удален импорт getTrackTypeForMediaFile
- image-preview: удален импорт getTrackTypeForMediaFile

Импорт не используется после рефакторинга drag & drop

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: chatman-media

src/features/browser/components/preview/audio-preview.tsx

@@ -5,7 +5,6 @@ import { LiveAudioVisualizer } from "react-audio-visualize"
 
 import type { MediaFile } from "@/domains/media-management"
 import type { TimelineResource } from "@/domains/shared/types/resources"
-import { getTrackTypeForMediaFile } from "@/features/timeline"
 import type { DragData } from "@/features/timeline/types/drag-drop"
 import { usePlayer } from "@/features/video-player"
 import { createAudioUrl } from "@/lib/media-url-utils"

src/features/browser/components/preview/image-preview.tsx

@@ -4,7 +4,6 @@ import { memo, useCallback, useEffect, useMemo, useState } from "react"
 
 import type { MediaFile } from "@/domains/media-management"
 import type { TimelineResource } from "@/domains/shared/types/resources"
-import { getTrackTypeForMediaFile } from "@/features/timeline"
 import type { DragData } from "@/features/timeline/types/drag-drop"
 import { usePlayer } from "@/features/video-player"
 import { createImageUrl } from "@/lib/media-url-utils"